Automatic Water Pump Controller Using Arduino


The automatic water pump controller using Arduino is a project that aims to automate the control of water pumps based on specific conditions or requirements. It utilizes the Arduino microcontroller board, along with various sensors and components, to monitor the water level and control the operation of the water pump accordingly.

Traditionally, water pumps are manually operated, requiring constant monitoring and adjustment by individuals. However, with the advancement of technology, automation has become more prevalent, enabling more efficient and convenient control of water pumps.

Throughout this project, we will explore the necessary components, circuit connections, and programming logic required to develop an automatic water pump controller using Arduino. By following the provided instructions, enthusiasts can create their own customized system and experience the benefits of automation in water management.

Bill Of Materials

1Arduino nanoMicrocontroller1
2Relay modulesingle channel1
3Resistorresistor pack1
4water sensorwater level sensor1
6Adapter,Power5V / 2A1
7Connecting wiresjumper wiresome

Advantages of Automatic Water Pump Controller using Arduino

Automatic Water Pump Controller using Arduino offers several advantages:

  1. Efficiency: The controller ensures efficient water usage by automatically activating and deactivating the pump based on the water level. This prevents unnecessary water wastage and optimizes the pump’s operation.
  2. Convenience: The automated system eliminates the need for manual monitoring and control of the water pump. Users can rely on the Arduino controller to handle the pump operation, saving time and effort.
  3. Water conservation: By controlling the pump based on water level, the system promotes water conservation. It prevents overfilling or emptying of water tanks, thus reducing water consumption and preserving this precious resource.
  4. Protection against dry running: The controller includes safeguards against dry running, which occurs when the pump operates without sufficient water supply. Dry running can damage the pump and reduce its lifespan. The automatic system prevents this by shutting off the pump when the water level is too low.
  5. Flexibility and customization: Arduino-based controllers are highly customizable and can be programmed to suit specific requirements. Users can adjust parameters such as water level thresholds, pump activation/deactivation timings, and even incorporate additional features like alarms or remote monitoring.
  6. Cost-effectiveness: The automation provided by the Arduino controller helps optimize water usage, reducing overall costs associated with water consumption. It also safeguards the pump against damage, potentially extending its lifespan and reducing maintenance or replacement expenses.
  7. Energy efficiency: With the automatic control of the pump, energy consumption is optimized. The pump operates only when necessary, leading to energy savings and lower electricity bills.
  8. Reliability: Arduino controllers are known for their reliability and stability. They can accurately monitor water levels and control the pump operation, providing a dependable solution for water management.

Overall, an Automatic Water Pump Controller using Arduino offers efficiency, convenience, water conservation, protection against dry running, customization options, cost-effectiveness, energy efficiency, and reliability, making it a beneficial solution for managing water pumps in various applications.

PCB Manufacturer

PCBWAY is a highly skilled company specializing in PCB manufacturing. They offer their services at incredibly low prices, such as providing 10 PCBs for only $5. Additionally, new members receive a $5 bonus. The website allows customers to upload their Gerber Files and place orders.


PCBWAY is known for producing PCBs of exceptional quality and maintaining high standards, which is why many people trust them for their PCB and PCBA needs.

Below are some of my PCB’S manufactured by PCBWAY and I am fully satisfied by their Quality of service they provide.

Working Principle of automatic water pump

The automatic water pump controller using Arduino works based on the input from water level sensors and the programmed logic in the Arduino microcontroller. Here’s a step-by-step explanation of how it typically operates:

  1. Water Level Sensing: The system incorporates water level sensors placed inside the water tank or reservoir. These sensors can be ultrasonic, capacitive, or float-based, depending on the specific design. They continuously monitor the water level and provide feedback to the Arduino.
  2. Arduino Input: The Arduino reads the input from the water level sensors connected to its digital or analog pins. The sensors’ readings indicate whether the water level is below the lower threshold, within the desired range, or above the upper threshold.
  3. Decision Making: Based on the sensor readings, the Arduino applies programmed logic to determine the appropriate action for the water pump. The logic typically includes conditions such as:
    • If the water level is below the lower threshold, the pump needs to be activated.
    • If the water level is above the upper threshold, the pump needs to be deactivated.
    • If the water level is within the desired range, the pump remains off.
  4. Pump Control: The Arduino controls the water pump using relays, motor drivers, or other suitable components. When the decision logic indicates that the pump should be activated, the Arduino sends a signal to turn on the pump. Similarly, when the decision logic indicates that the pump should be deactivated, the Arduino sends a signal to turn off the pump.
  5. Pump Operation: Once the pump is activated, it starts pumping water from a water source (such as a well or a storage tank) into the desired location (such as a water tank or irrigation system). The pump continues operating until the water level reaches the upper threshold.
  6. System Monitoring: Throughout the process, the Arduino continuously monitors the water level readings from the sensors. It adjusts the pump operation accordingly to maintain the water level within the desired range. This monitoring and control process repeats continuously as long as the system is powered on.

Schematic Diagram

PCB Image

Front View

Back View

Manufacturing Files


Bill Of Materials

I have already uploaded all these required manufacturing files in PCBWAY website. You can easily go to the below link and place you order, and get your Own  Home Automation PCB manufactured from one of the best pcb manufacturer PCBWAY.

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In conclusion, the automatic water pump controller using Arduino is an effective and efficient system that provides automated control over water pumping operations. By utilizing an Arduino microcontroller, various sensors, and a relay module, the system is capable of monitoring water levels and activating the water pump as needed.

Overall, the automatic water pump controller using Arduino is a practical solution for automating water pumping operations. It combines the power of Arduino programming, sensor technology, and relay control to provide an intelligent and reliable system for managing water levels and ensuring efficient water usage.

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